Weighing apparatus.



No. 864,460. PATENTED AUG. 27, 1907.

J, ERTNER & A. JERE/MIAS. WEIGHING APPARATUS.

APPLICATION FILED HARJO, 1905.

UNITED STATES JULIUS ERTNER AND ARNOLD JEREMIAS, OF BUDAPEST, AUSTRIA-EUPATENT OFFICE.

NGARY, ASSIGNORS TO THE FIRM or ELso MAGYAR AUTOMETERTARSASAG FLEINER ESERTNER, OF BUDA- PEST, AUSTRIA-HUN GARY.

WEIGHIN G APPARATUS.

Specification of Letters Patent.

Patented Aug. 2'7, 1907.

To all whom it may concern:

Be it known that we, JULIUs ERTNER and ARNOLD .lnunninis, subjects ofthe King of Hungary, and residing at Budapest, AustriaHungary, haveinvented a 5 new and useful Improved Weighing Apparatus for Goods ofEvery Kind, of which the following is a description.

The present invention consists of an automatic weighing machine forpiece or granular goods or also for liqids, and comprises the details ofconstruction hereinafter set forth and particularly pointed out in theclaims.

a In order to render the present specification easily intelligiblereference is had to the accompanying drawing in which similar numeralsof reference denote similar parts throughout the several views.

Figure 1 is a side elevation of one form of embodying the invention andFig. 2 a plan of the same.

The weight of the material to be weighed is determined by the weight 2plus the weight of the two levers 2 21 and 18 and the weight 19, whichare attached to the said weight 2. At a suitable position on the frameof the weighing machine a stop 15 is provided against which the free endof the lever 21 strikes just before the scales balance. The lever 21engages with its hook 20 over a similar hook 17 of the lever 18 andretains the latter in the position shown in Fig. 1.

Just before the scales balance, 1'. e. before the beam 1 attains itshorizontal position, the stop 15 arrests the free end of the lever 21,thus causing the same to turn 3 O on its pivot and to disengage the hook20 from the nose or hook 17 of the lever 18. After this disengagementthe lever 18 falls, owing to the action of its weight 19 around itspivot and shifts the distribution of weight on the right arm of thebeam, so that the scale containing the goods to be weighed isoverbalanced and will move downwardly in order to be entirely emptied.The weight 19 should be advantageously so dimensioned that when it isreleased the scale containing the ware will sink sufiiciently far andthat when it finally rests on the column 16 it will be sufficient toprevent the scale containing the ware from rising again until it hasbeen entirely emptied. When this has taken place,

the scale 3 will rise rapidly owing to the weight at the right hand endof the beam, so that the weight 19 with its lever 18 will be suddenlyswung on its pivot so that the hook 17 of the lever 18 will reengagewith the hook 20 of the lever 21, i. e. the parts will be returned totheir initial positions.

The receptacle forming the scale 3 is provided with a cover consistingof one or more parts, in the drawing two parts 9 and 10 are shown. Thedoor 9 carries an arm 11 and the door 10 is prolonged at 12. In additionto these parts the receptacle 3 is provided with an arm 13 and thehopper 4 for the wares with an arm 14.

The valves 7 and 8 of the hopper 4 are held normally closed by means ofweighted levers 7 and 8 attached thereto, when the receptacle 3 is outof contact with the hopper. The door 9 as also that 10 will close bygravity when the receptacle is clear of the hopper. Door 9 is providedwith an upturned arm 11, adapted to engage the weighted lever 7 of thevalve 7 when the receptacle rises and the latter is provided with anupwardly extending arm 13 adapted to lift the weighted arm 8 of thevalve 8 and open the latter when the receptacle rises, while an arm 14fixed to the hopper engages the 6 extension 12 of the doorlO as the saidreceptacle rises and opens the door 10. The parts are so weighted anddimensioned, that the upturned arm 11 will engage the weighted lever armof valve 7 as the receptacle rises and these two parts will mutuallyoperate to open each other as will be readily understood on reference tothe drawing.

When the scale 3 falls the doors 9 and 10 close the moment the balancehas been attained (Fig. 2). The doors 9 and 10 of the scale receptacle 3are so formed that when closed they form a trough in which the materialfalling at the moment of the balance is caught. The material remainingin this trough forms a surplus weight but does not mix with the materialin the receptacle which has been weighed. The reccptacle is now emptiedby means of known devices, which it is not necessary to describe furtherhere, and remains in its lowest position until it has been properlyemptied. When this has taken place the scale 3 rises under the influenceof the weight 2 suddenly to the position shown in Fig. 1, and in sodoing the mutual cooperation of the hopper and the doors 9 and 10, theopenings 5 and 6 of the hopper are opened and also the doors 9 and 10,so that the material caught by the trough falls into the receptacleforming part of the next quantity of material to be weighed.

We claim as our invention:-

1. In an automatic weighing machine, the combination of a pivotallysupported drop weight, forming part of the counter balancing weight andadapted to fall, when re leased across the beam support, ,a receptacleto receive the goods to be weighed and a hopper thereabove, doors to thesaid receptacle to automatically close when the scales balance, apivoted lever to retain the drop weight in the raised position, Whilethe receptacle is being filled and means for releasing the said weight,immediately the scales balance substantially as described.

2. In an automatic Weighing machine, the combination of a pivotallysupported drop weight forming part of the counter balancing weight andadapted, when released to fall across the beam support, a receptacle forthe goods to be weighed, having doors, normally closed by gravity, a

hopper having valves, and mounted above said receptacle and means inconnection with said doors and valves to open all of them when thereceptacle contacts with or

